<template>
    <div class="app-container">
        <el-form label-width="120px">
            <el-form-item label="信息描述">
                <el-tag type="info">excel模版说明</el-tag>
                <el-tag>
                    <i class="el-icon-download"/>
                    <a :href="OSS_PATH + '/excel/%E7%A4%BA%E4%BE%8B.xlsx'">点击下载模版</a>
                </el-tag>
            </el-form-item>
            <el-form-item label="选择Excel">
                <el-upload
                    ref="upload"
                    :auto-upload="false"
                    :on-success="fileUploadSuccess"
                    :on-error="fileUploadError"
                    :disabled="importBtnDisabled"
                    :limit="1"
                    :action="BASE_API+'/eduservice/subject/addSubject'"
                    name="file"
                    accept="application/.xlsx">
                    <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
                    <el-button
                    :loading="loading"
                    style="margin-left: 10px;"
                    size="small"
                    type="success"
                    @click="submitUpload">上传到服务器</el-button>
                </el-upload>
            </el-form-item>
        </el-form>
    </div>
</template>
<script>
export default {
    data() {
        return {
            BASE_API: process.env.BASE_API,//后端域名地址
            OSS_PATH: process.env.OSS_PATH,//oss地址
            importBtnDisabled : false,
            loading: false    
        }
    },
    created() {

    },
    methods: {
        //点击按钮上传文件到接口里面
        submitUpload() {
            this.importBtnDisbaled = true
            this.loading = true
            // js: document.getElementById("upload").submit()
            this.$refs.upload.submit()
        },
        //上传成功
        fileUploadSuccess() {
            // 提示信息
            this.loading = false
            this.$message({
                type: 'success',
                message: '添加课程分类成功'
            })
            // 跳转课程分类列表

        },
        //上传失败
        fileUploadError() {
            this.loading = false
            this.$message({
                type: 'error',
                message: '添加课程分类失败'
            })
        }
    }
}
</script>